Machine for use in the manufacture of boots and shoes.



A. W. MATTHEWS, MACHINE FOR USE IN THE MANUFACTURE OF BOOTS AND SHOES, APPLICATION FILED JULYS, 1908.

999,050, Pafiented July 25, 1911.

WWVESSES ALGERNON W. MATTHEWS, OF HAVERHiL-L, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY NFW JERSEY.

MACHINE FOR USE IN THE MA.

COMPANY, OF PATERSON, NEW' JERSEY, A CORPORATION OF 'UFACTURE OF BOOTS AND SHOES.

Specification of letters Patent.

Patented July 2.3, 1911.

Application filed July 3. 1. Wt Serial No. 441,836.

To all whom it may concern:

Be it known that I, Ancnnnon W. MAT- THEws, a citizen of the United States, residing at Havel-hill, in the county of Essex and Commonwealth of Massachusetts, have invented certain Improvements in Machines for Use in the lvlanufacture of Boots and Shoes, of which the follow inc; description, in connection with the accompanying drawings, is a specification, like retercnce characters on the drawings indicating like parts in the several figure.

This invention relates to trimming machines used in the manufacture of boots and shoes and especially to machines used in trimming the edges of the heelsor soles of boots and shoes.

In particular the invention relates to a machine used in trimming and randing the edge 03 the heel seat portion of the solo together usually with a portion of the adjacent edge 05' the heel.

In many machines in comn'icrcial use at the present time the operation of trimming the heel of a shoe is perforn'ied in two steps; the first step consisting in trimming the greatei part of the edge of the heel upon a cutter of a width substantially equal to the height of the heel to be trimmed, and the second step consisting in trimming the portion oi the heel which includes the heel scat end of the sole upon a narrower cutter having a rand trimming portion. This latter cutter is usually provided with a rand guard, which enters the rand crease and pro tectsthe upper in, this region from injury during the trimming operation, and a back guard or back shield path of travel of the cutting edge of the cutter adjacent to it and prevents the cutter from cutting too deep into the portion of the heel which has previously been trimmed on the larger cutter above referred to.

Dilliculty has been found in maintaining the outer edge'of the back shield substantially flush with the path of travel of the adjaccrt cutting edge of the cutter, especially after the cutter has been sharpened. Ad just-Dent of this shield to the cutter, after sharpening, has been effected usually, up to which extends to the the present time, either by grinding down the shieldjuntil its outer edge is flush with the path of travel of the adjacent cutting edge of the cutter, or by providing aseries of shields of difi'erent diameters so that a shield of a smaller diameter may be attached to the cutter after it has been ground back to sharpen it. The first of these methods is. somewhat objectionable since the grinding hack of the shield consumes considerable time of the operator and the second method is also objectionable since the cost of the extra shields is conside 'able.

An object of the present invention is to provide a shield for cutters of the type above mentioned which can be adjusted. to the cuttor for use therewith after many successive grinding-3's of the cutter.

A further object of the invention is to provide a shield for use with cutters of the above mentioned type which does not rotate with the cutter during the rimming operation and therefore does not rub 1 me work or cause the work (0 partake of the lateral vibrations of the cutter shaft.

Another object of the invention is to provide a shield which, although not arranged to rotate with the cutter, is'ncverlheless free to be rotated by the work as it turned by the operator to bring d'iit'err .;tportions into operative relation to hi6 cu 'er.

"With the foregoing and ther objects in view the invention is her in shown as our bodied in a constructioncomprising a sleeve having a shaft receiving opening of a diameter considerably greater than that of the shaft, whcrebythe sleeve may be adjusted transversely of the shaft, and a shield rotatably mounted upon said sleeve and maintained by said sleeve adjacent to the back face of the. rotary cutter. The sleeve. is proterably mounted upon guides extending at right angles to the cutter shaft and means is provided for moving the sleeve transversely of the cutter shaft, an important feature of the invention being the provision of means. for adjusting the sleeve and shield transversely of the cutter sl1aft while the latter is rotating.

In the accompanying d1'aWings,-Figure 1 is a front elevation of a portion of a heel trimming machine having the invent-ion of this application applied thereto; Fig. 2 is an end view of the portion of the heel trimming machine shown in Fig. 1, a part of the rand guard and cutter being broken away to show the back shield, and Fig. 3 is a detail view showing especially the construction of the means for adjusting the'shield carrying elements, per se, constitutin no part of the present invention. Exten ing across the shaft of the machine to opposite sides ofthe bearings for said shaft is-a dove-tail ide 10, providing guiding portions above and below the shaft upon which is maintained the support 12 of the shield carrying sleeve 14;, the outer end of said sleeve being reduced to receive the hub 16 of the back shield or guard 18. Formed integral with the support 12 of the sleeve 14 is an offset extension 20 in which is rotatably mounted an adjusting screw 22 having a knurled head .24 by which it may readily be turned, this screw being received in a threaded opening in theportion of the frame 4 lying between the edges of the dove-tail guide upon the back sideof said frame. A spring 26 provides friction to preventaccidental turning of the screw after a desired adjustment has been secured.

In trimming shoes on a rotary cutter only a small portion of the path of travel of the cutter is traversed by the shoe, usually not over one-third and therefore an adjustment of the back shield 18 substantially transs versely of the cutter shaft to compensate for changes in the diameter of the cutter will give a bearing surfacefor the work nearly enough concentric with the path of travel of the adjacent cutting'edge of the cutter for practical purposes, especially if the shield is brought into a position substantially flush with said path of travel at the point where most of the trimming is done. The dove-tail guide is therefore so located with respect to the dvork rest 28 that movement 0 the shield carrying sleeve 14 back and fo th over it will produce the desired adjustment ofsaid sleeve.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. A machine of the class described, having in combination, a rotary cutter, a cutter shaft mounted in hearings in the machine shaft, a

frame, guides above and below the-shaft and extending across the shaft to opposite sides of the bearings therefor a sleeve loosely surrounding the shaft, adjust able upon said guides transversel y to the axis of rotation of said shaft and receiving direct support from said guides upon all sides of said shaft, and a back shield for said cutter mounted to turn independently of said cutter upon said sleeve. k

2. A machine of the class described, hav- '75 ing in combination, a cutter shaft mounted in "hearings in the machine frame, a rotary cutter upon said shaft, guides above and below the shaft and extending across the shafttp opposite sides of the bearings there for, a sleeve support slidingly mounted upon said guides, a sleeve carried by said suport loosely surrounding said shaft whereby it may be moved transversely thereto, said sleeve being directly connected to its support upon opposite sides of said shaft, 2. back shield carried. by said sleeve, and means 1 for moving said support to carry said sleeve across the shaft.

3. A machine of the class described, having in combination, a rotary cutter, a cutter shaft mounted in bearings in the machine frame, 3 sleeve loosely surrounding said ,back shield for said cutter mounted upon said sleeve, a concentric support for said sleeve provided with transverse guides and cooperating guides upon the machine frame extending across the shaft. I

4. A machine of the class, described, hav- I. ing in combination, a cutter shaft mounted 0 in hearings in the machine frame, a rotary cutter upon said shaft, a sleeve loosely surrounding said shaft between the cutter and the shaft bearings, a back shield for said cutter mounted to turn upon said sleeve, a concentric support for said sleeve provided with transverse guides, cofiperating guides upon the machine frame extending across the shaft, a laterally ofi'set extension upon said support and a screw threaded into the 0 machine frame constructed to operate upon said extension to move said sleeve transversely to the shaft.

5. A machine of the class described, having in combination, a cutter shaft mounted in bearingsinthe machine frame, a rotary M cutter upon said shaft, a dove-tailed guide extending across said shaft, a sleeve adjust-- able upon said guide transversely to the axis ofrotation of said shaft-and directly sup- 12 ported from said guide upon all sides of said shaft, and a shield for said cutter mounted to turn upon said'sleeve.

6. A machine of the classdescribed, having in combination, a rotary cutter, a cutter 12 5 shaft mounted in hearings in the machine frame, guides above and below the shaft and extending across the shaft and a back shield for said cutter loosely surrounding said shaft and a support for said shield arranged to slide upon said guides, said shield support and guides being so connected that 5 said shield receives direct support from said guides upon all sides of said shaft.

In testimony whereof I have signed my name to this specification in the presence of two subscrlblng witnesses.

ALGERNON W. MATTHEWS. I

Witnesses:

MARIE L. STEUTERMANN, EDITH C. HO'LBROOK. 

